Remove `OverrideKind` enum
Remove `OverrideKind` enum

nodakai/rustup.rs,rust-lang/rustup,rust-lang/rustup,nodakai/rustup.rs,nodakai/rustup.rs,nodakai/rustup.rs,rust-lang/rustup,rust-lang/rustup,rust-lang/rustup,nodakai/rustup.rs